added deprecation tag to menu

templates/apidocs/open/promos.html.twig

@@ -144,7 +144,7 @@
 							<div class="content">
 								<div class="on-this-page-nav">
 									<div class="title">On this page</div>
-									<a href="#promos">Promos</a>
+									<a href="#promos"><span class="badge badge-secondary">Deprecated</span> Promos</a>
                                     <a href="#activePromos">Active Promos</a>
 								</div>
 							</div>